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電氣工程與自動化專業英語 版權信息
- ISBN:9787111311652
- 條形碼:9787111311652 ; 978-7-111-31165-2
- 裝幀:一般膠版紙
- 冊數:暫無
- 重量:暫無
- 所屬分類:>>
電氣工程與自動化專業英語 本書特色
《電氣工程與自動化專業英語》是普通高等教育“十二五”電氣信息類規劃教材之一。
電氣工程與自動化專業英語 內容簡介
本書分為電氣工程基礎、控制理論與技術、電機與電器設備、電力系統4大部分,共20章。為便于學生對文章的正確理解,每章后均補充了必要的專業英語詞匯、短語及句子注釋。本書涵蓋了電氣工程與自動化專業的主要專業基礎理論內容,注重從實際應用出發培養學生的專業英語閱讀和寫作能力。 本書既可作為高等院校電氣工程與自動化及相關專業高年級學生的專業英語教材,也可作為從事電氣信息類各專業工程技術人員的參考用書。
電氣工程與自動化專業英語 目錄
電氣工程與自動化專業英語 節選
《電氣工程與自動化專業英語》分為電氣工程基礎、控制理論與技術、電機與電器設備、電力系統4大部分,共20章。為便于學生對文章的正確理解,每章后均補充了必要的專業英語詞匯、短語及句子注釋。《電氣工程與自動化專業英語》涵蓋了電氣工程與自動化專業的主要專業基礎理論內容,注重從實際應用出發培養學生的專業英語閱讀和寫作能力。《電氣工程與自動化專業英語》既可作為高等院校電氣工程與自動化及相關專業高年級學生的專業英語教材,也可作為從事電氣信息類各專業工程技術人員的參考用書。
電氣工程與自動化專業英語 相關資料
插圖:2. Electronic CircuitsCurrent flow takes place in electronic circuits. A circuit is a path for electric current flow. Electric current flows only when it has a complete, or closed-circuit, path. There must be a source of electrical energy to cause current to flow along a closed path. 4 The electrical energy is converted into more useful energy, for example, the light energy.Electric current cannot flow if a circuit is open. An open circuit does not provide a complete path for current flow. Free electrons of the conductor would no longer move from one atom to another. An example of an open circuit is a "burned-out" light bulb. Actually, the filament (the part that produces light) has become open. The open filament of a light bulb stops current flow from the source of electrical energy. This causes the bulb to stop burning, or producing light.Another common circuit term is a short circuit. A short circuit, which can be very harmful, occurs when a conductor connects directly across the terminals of an electrical energy source. For safety purposes, a short circuit should never happen because short circuits cause too much current to flow from the source. If a wire is placed across a battery, a short circuit occurs. The battery would probably be destroyed and the wire could get hot or possibly melt due to the short circuit.1.3.2 VoltageWater pressure is needed to force water along a pipe. Similarly, electrical pressure is needed to force current along a conductor. If a motor is rated at 220 V, it requires 220 V of electrical pressure applied to the motor to force the proper amount of current through it. More pressure would increase the current flow and less pressure would not force enough current to flow. The motor would not operate properly with too high or too low voltage. An electrical energy source such as a battery or generator produces current flow through a circuit. As voltage is increased, the a- mount of current in the circuit is also increased. Voltage is also called electromotive force (EMF).
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